Expansion valve



FIG. 1 is a left front perspective view of the expansion valve showing our new design;

FIG. 2 is a right front perspective view thereof;

FIG. 3 is a front view thereof, the rear view being a mirror image thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a plan view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a left side elevational view of the expansion valve. 

The ornamental design for an expansion valve, as shown and described. 